1,Formula: C6H5K3O7·H2O
2,Formula wt: 324.41
3,CAS: [6100-05-6]
4,Specificity: White crystal or powder; odorless; taste salty; easy deliquescence; readily soluble in water or glycerin, almost insoluble in ethanol(Relative density 1.98 it will melt and decompose when heated to 230℃.
5,Packing: 25kg net paper bag or 1mt big bag with PE liner.
Name of index |
BP98 |
E-332(ii) |
Description |
White, hygroscopic, granular powder or transparent crystals |
Identification |
Positive tests for citrate and for potassium |
Appearance of solution |
Clear and colourless |
-- |
Assay(on anhydrous basis),% |
99.0—101.0 |
≥99.0 |
Chloride ,≤ppm |
50 |
-- |
Heavy metals(As Pb),≤ppm |
10 |
5 |
Sodium,≤% |
0.3 |
-- |
Oxalates,≤% |
0.03 |
0.01 |
Sulphates,≤% |
0.015 |
-- |
Acidity or Alkalinity |
Passes test |
-- |
Readity carbonisable substances |
Not deeper than standard |
-- |
Loss on drying(180℃,4h) |
4.0-7.0 |
≤6% |
pH(5%aqueous solution) |
-- |
7.5-9.0 |
Arsenic(As),≤ppm |
-- |
1 |
Lead(Pb),≤ppm |
-- |
1 |
Mercury(Hg),≤ppm |
-- |
1 |
|
